The AAT15071 is a boost DC-DC converter for white LEDs. Series connection of the LEDs allows consistent LED currents, which is essential for uniform brightness, and eliminates the need for ballast resistors. The 20V over voltage comparator can also be used to prevent output open-circuit, caused by bond wire breakages.
The AAT15071 switches at 1.4MHz. Optional external components may also be added if required. The optimized input/output capacitor and a low feedback voltage to minimize power loss in current-setting resistor make AAT15071 a power-smart solution.  
The AAT15071 is available in a space-saving TSOT23-6 (TSOT26), SOT23-6 (SOT26) and VSON8
package, which are ideal for portable applications.